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The Sun acts like it has a big magnet in the middle of it. We call this the Sun's magnetic field. The Sun's magnetic field has a fancier name, the Interplanetary Magnetic Field (IMF). This just means that...more

Have you ever seen an explosion before? Maybe you've seen a volcano explode on t.v. Or maybe you've seen a potato explode in the microwave because your mom forgot to poke holes in it. Well, explosions...more

The Sun is not a quiet place, but one that exhibits sudden releases of energy. One of the most frequently observed events are solar flares: sudden, localized, transient increases in brightness that occur...more

The visible solar atmosphere consists of three regions: the photosphere, the chromosphere, and the solar corona. Most of the visible (white) light comes from the photosphere, this is the part of the Sun...more

To understand how our Sun works, it helps to imagine that the inside of the Sun is made up of different layers, one inside the other. The center of the Sun is called the core. It is the region where the...more

Scientists at the High Altitude Observatory (HAO) try to learn about the changes we see in the Sun over time. They also study how it affects the atmosphere of the Earth. There are four main areas of study...more

The Sun affects many things on Earth. One of the main things the Sun does is warm our planet, including the atmosphere. This energy drives much of Earth's weather. The solar cycle is the rise and fall...more

In the basic Hydrogen fusion cycle, four Hydrogen nuclei come together to make a Helium nucleus. This is the simple version of the story. There are actually electrons, neutrinos and photons involved in...more